Ionic compound: Metal + Nonmetal (usually)
Ionic compound: metal + polyatomic ion (usually)
Covalent compound: Nonmetal + Nonmetal (usually)
covalent compound: hydrogen and a nonmetal (usually)
Acid: An chemical molecule is referred to as an acid when it dissolves in water or reacts with other chemicals to produce H+ ions. such as hydrochloric acid. H+ ions are produced in this chemical reaction by HCl. Thus, it is an acid.
In general, hydrogen comes first in the formula for an acid. If an acid only contains two components, it is known as hydro- -ic acid. Hydrochloric acid is an example of HCl. And HBr is the chemical formula for hydrobromic acid.
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